Set includes one seat cushion (25" x 25"), and one back cushion (24" W x 20" H) Cushion covers are made from 100% acrylic, high-performance Sunbrella outdoor fabric that is water, fade, and stain resistant Back cushion is filled with a soft polyfiber material made from 100% recycled, post-consumer plastic bottles; Seat cushion features a poly-wrapped foam insert Attached string ties help keep cushions securely attached to outdoor furniture For best results and to extend the life of your cushions store covered when not in use